Graphical representation for generating musical sequences

The author constructed a model for mapping between music and visual representation, and developed related software for controlling MIDI instruments. This software can design musical sequences by defining graphical shapes consisting of line segments representing notes in a sequence. The shapes are drawn and the sequences are played simultaneously. The pitch and the time value of a note are represented, respectively, by the direction and the length of the corresponding line, and the intensity and the timbre are represented by the color and the shape of the node of the line. Line drawing is executed sequentially or in parallel. If a shape is embedded into a line of another shape to create a complex pattern, the drawing is executed recursively